DE360605C - Process for the preparation of mixed cements from Portland cement and water-granulated blast furnace slag - Google Patents

Process for the preparation of mixed cements from Portland cement and water-granulated blast furnace slag

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Publication number
DE360605C
DE360605C DEL50784D DEL0050784D DE360605C DE 360605 C DE360605 C DE 360605C DE L50784 D DEL50784 D DE L50784D DE L0050784 D DEL0050784 D DE L0050784D DE 360605 C DE360605 C DE 360605C
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DE
Germany
Prior art keywords
blast furnace
furnace slag
portland cement
water
preparation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEL50784D
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German (de)
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Individual
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Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Individual filed Critical Individual
Priority to DEL50784D priority Critical patent/DE360605C/en
Application granted granted Critical
Publication of DE360605C publication Critical patent/DE360605C/en
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/14—Cements containing slag
    • C04B7/147—Metallurgical slag
    • C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
    • C04B7/17—Mixtures thereof with other inorganic cementitious materials or other activators with calcium oxide containing activators
    • C04B7/19—Portland cements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)

Description

Verfahren zur Aufbereitung von Blischzementen aus Portlandzement und wassergranulierter Hochofenschlacke. Bei der Erzeugung von Zement aus Portlandklinker und wassergranulierter Hoch ofenschlacke, z. B. Hochofen-, Eisenportlandzement u. dgl., wird gewöhnlich der Brand des benötigten Portfand'zemeri=tklinkers und die Trocknung der wassergranulierten Hochofenschlacke in voneinander getrennten, gesondert beheizten Ofen vorgenommen. Es ist auch versucht worden, beim Drehrohrofenbetriebe einen Teil der vom Drehrohrofen abgegebenen Wärme abzusaugen und in Trockentrommeln für Schlacke hinüberzudrücken. Bei diesem Verfahren leiden aber meist beide Betriebe, weshalb es in der Praxis keine weitgehende Verwendung fand.Process for the preparation of blended cements made from Portland cement and water-granulated blast furnace slag. In the production of cement from Portland clinker and water-granulated blast furnace slag, e.g. B. blast furnace, iron Portland cement u. Like., the fire of the required Portfand'zemeri = tklinker and the Drying of the water-granulated blast furnace slag in separate, separate heated oven. Attempts have also been made in rotary kiln operations sucking off some of the heat given off by the rotary kiln and placing it in drying drums for slag to push over. With this procedure, however, both companies usually suffer, which is why it was not widely used in practice.

Beim Brennen von Portlandzement im Ringofen entsteht infolge des starken Zusammensinterns des Brenngutes im Feuer mischen dem gesinterten Gute und der Brennkanalwölbung ein großer freier Raum, durch welchen Luft in zu großer Menge und an nicht zweckmäßiger Stelle in die Brennzone gelangen kann. Beim Verfahren gemäß der Erfindung wird dieser schädliche Raum in einer Entfernung vom Feuer, bei welcher eine Temperatur herrscht, welche auf die granulierte Hochofenschlacke keinen schädlichen Einfluß ausübt, mit Hochofenschlacke ausgefüllt. Dadurch wird eine dreifache Wirkung erzielt. r. Der Zutritt der Verbrennungsluft kann durch Beseitigung oder Verringerung dieses schädlichen Raumes geregelt werden. Hierdurch wird Brennstoff für den Portlandbrand gespart.When Portland cement is burned in a ring kiln, the strong Sintering the material to be fired in the fire mixes the sintered material and the curvature of the firing channel a large free space through which air in too great a quantity and not more expediently Place can get into the burning zone. In the method according to the invention this harmful space at a distance from the fire at which there is a temperature which exerts no harmful influence on the granulated blast furnace slag, with Filled in blast furnace slag. This has a threefold effect. r. Of the Access to the combustion air can be harmful by eliminating or reducing this Room can be regulated. This saves fuel for the Portland fire.

2. Die granulierte Hochofenschlacke wird unter weitgehender Ausnutzung der Abwärme des gebrannten Portlandklinkers ohne gesonderten Brennstoffverbrauch getrocknet.2. The granulated blast furnace slag is largely exploited the waste heat of the burned Portland clinker without separate fuel consumption dried.

3. Weil der Brand des Portlandklinkers und die Trocknung der Hochofenschlacke gleichzeitig in einem gemeinsamen Ofen stattfinden, werden Anlage und Betrieb vereinfacht, daher auch aus diesen Gründen Fabrikationskosten erspart.3. Because the Portland clinker fire and the drying of the blast furnace slag take place at the same time in a common furnace, the system and operation are simplified, therefore also saves manufacturing costs for these reasons.

Die unter i und 2 angeführten Wirkungen können noch bedeutend erhöht werden, wenn der Brennkanalinhalt während des Trocknens der Schlacke stetig aufgelockert wird, wie dies die Patentschrift 32o282 vorschreibt.The effects listed under i and 2 can be significantly increased are loosened when the combustion channel contents are steadily loosened during the drying of the slag becomes, as the patent specification 32o282 prescribes.

Claims (1)

PATENTANSPRÜCHE i. Verfahren zur Aufbereitung von Mischzementen aus Portlandzement und wassergranulierter Hochofenscblacke, dadurch gekennzeichnet, daß der Brand des Portlandzementklinkers und die Trocknung der Hochofenschlacke in einem gemeinsamen Ofen vorgenommen wird. :'. Verfahren zur Aufbereitung von Mischzementen aus Portlandement und wassergranülierter@I-löOhofenschlacke unter Benutzung des Ringofens,; dadurch aehennznichnet, Aß d-er beim Zementbr ande im Ringofen durch das Zusammensintern des Brenngutes zwischen diesem und der Brennkanalwölbung entstehende Raum durch Anfüllen mit Hochofenschlacke beseitigt oder verringert wird. PATENT CLAIMS i. Process for the preparation of mixed cements from Portland cement and water-granulated blast furnace slag, characterized in that the firing of the Portland cement clinker and the drying of the blast furnace slag are carried out in a common furnace. : '. Process for the preparation of mixed cements from Portland cement and water-granulated @ I-LöOhofenschlage using the ring kiln; characterized aehennznichnet, Aß in the Zementbr walls in the ring furnace through the sintering together of the combustion material between it and the internal channel curvature resulting space is eliminated by stuffing with blast furnace slag or decreased.
DEL50784D 1920-06-23 1920-06-23 Process for the preparation of mixed cements from Portland cement and water-granulated blast furnace slag Expired DE360605C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL50784D DE360605C (en) 1920-06-23 1920-06-23 Process for the preparation of mixed cements from Portland cement and water-granulated blast furnace slag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL50784D DE360605C (en) 1920-06-23 1920-06-23 Process for the preparation of mixed cements from Portland cement and water-granulated blast furnace slag

Publications (1)

Publication Number Publication Date
DE360605C true DE360605C (en) 1922-10-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DEL50784D Expired DE360605C (en) 1920-06-23 1920-06-23 Process for the preparation of mixed cements from Portland cement and water-granulated blast furnace slag

Country Status (1)

Country Link
DE (1) DE360605C (en)

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